package com.itheima.health.controller;

import com.alibaba.dubbo.config.annotation.Reference;
import com.itheima.health.common.MessageConst;
import com.itheima.health.entity.Result;
import com.itheima.health.pojo.Menu;
import com.itheima.health.pojo.User;
import com.itheima.health.service.MenuService;
import com.itheima.health.service.UserService;
import com.itheima.health.vo.LoginParam;
import lombok.extern.slf4j.Slf4j;
import org.springframework.security.core.context.SecurityContextHolder;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.List;

/**
 * @author zhangmeng
 * @description
 * @date 2019/9/6
 **/
@RestController
@RequestMapping("/user")
@Slf4j
public class UserController {
    private static final String CURRENT_USER = "CURRENT_USER";
    @Reference
    private UserService userService;
    @Reference
    private MenuService menuService;

    /**
     * 根据用户名和密码登录
     *
     * @param request
     * @return
     */
    @PostMapping("/login")
    public Result login(HttpServletRequest request, @RequestBody LoginParam param) {
        log.info("[登录]data:{}",param);
        //rpc调用查询用户信息
        User user = userService.findByUsername(param.getUsername());
        //用户不存在或密码不匹配则登录失败
        if (null == user || !user.getPassword().equals(param.getPassword())) {
            return new Result(false, MessageConst.LOGIN_FAIL);
        }
        //用户信息写入 session
        request.getSession(true).setAttribute(CURRENT_USER, user);
        return new Result(true, MessageConst.LOGIN_SUCCESS);
    }

    /**
     * 登出
     * @param request
     * @param response
     * @return
     * @throws IOException
     */
    @RequestMapping("/logout")
    public Result logout(HttpServletRequest request,HttpServletResponse response) throws IOException {
        log.info("[登出]……");
        //从session中删除用户
        request.getSession().removeAttribute(CURRENT_USER);
        //重定向到登录页
        response.sendRedirect("http://oms.health.itcast.com:8080/pages/login.html");
        return null;
    }


    /**
     * 获取当前登录用户名
     *
     * @return
     */
    @RequestMapping("/getUsername")
    public Result getUsername() {
        Object principal = SecurityContextHolder.getContext().getAuthentication().getPrincipal();
        if (null != principal && principal instanceof org.springframework.security.core.userdetails.User) {
            org.springframework.security.core.userdetails.User user = (org.springframework.security.core.userdetails.User) principal;
            return new Result(true, MessageConst.GET_USERNAME_SUCCESS, user.getUsername());
        }
        return new Result(false, MessageConst.GET_USERNAME_FAIL);
    }

    @RequestMapping("/loginSuccess")
    public Result loginSuccess() {
        return new Result(true, MessageConst.LOGIN_SUCCESS);
    }

    @RequestMapping("/loginFail")
    public Result loginFail() {
        return new Result(false, "登录失败");
    }
    @GetMapping("/getmenu")
    public Result getmenu(String username){
        List<Menu> menus =menuService.findByName(username);
        return new Result(true,"",menus);
    }
    @RequestMapping("/getPage")
    public void getPage(String username,HttpServletResponse response) throws IOException {
        Menu menu=menuService.findMenuByName(username);
        response.sendRedirect("http://oms.health.itcast.com:8080/pages/"+menu.getLinkUrl());


    }


}
